Jupiter 12-LA Alnico 12" 8 ohm Speaker Unused

No sales tax for customers outside California.

The Jupiter 12-LA is a 12-inch Alnico speaker designed to capture the tonal character of vintage Jensen P12N speakers from the 1950s. With an 8-ohm impedance and lightweight Alnico magnet, it delivers warm mids, smooth high-end, and dynamic response that reacts beautifully to tube amps. Known for its touch sensitivity and musical compression, the 12-LA is a favorite for players seeking classic American clean tones, rich breakup, and vintage-style feel in Fender-style combos and boutique amps.

This example is unused and in mint condition, making it ideal for fresh installation in a restoration, custom build, or upgrade project. The cone, frame, and terminals are pristine, with no signs of mounting or soldering—perfect for collectors or tone purists wanting a brand-new vintage-voiced speaker.  A good customer and friend purchased this speaker but never used it, then traded it to us toward an amp.

At Mahar’s Vintage Guitars, all speakers are inspected, tested when applicable, and photographed accurately. We buy, sell, and accept trades on vintage instruments, amplifiers, and parts.

Explore our Fender Amplifiers Collection, Vintage Fender Guitars, and we also have a stash of vintage guitar / amp cases and speakers.

If you're looking to sell any vintage guitars, basses, amps or other gear, visit our Sell Your Vintage Gear page.

Measured Ohms: 6.5, Weight: 8lbs 4oz.

Real online reviews from end users on the Jupiter 12-LA

• “Closest modern speaker to an original P12N.” – The Gear Page
• “Warm, chimey, and super touch responsive.” – Fender Forum
• “Perfect upgrade for vintage Fender amps.” – Harmony Central
• “Breaks up beautifully without harshness.” – MyLesPaul Forum
• “Feels like a brand-new old Jensen—just better built.” – Reddit r/GuitarAmps

Shipping policy:

Shipments will require signature on delivery, no exceptions.  If there is damage, the buyer must retain all packing materials intact and picture them immediately and send them to sales@maharsvintageguitars.com.  Less than 1% of our shipments are damaged in transit, and we are committed to making sure your item arrives safely, but we are taking these additional measures to make sure you are happy with your purchase.